Results 21 to 30 of about 291,201 (341)
Gamma-ray emission from the globular clusters Liller 1, M80, NGC 6139, NGC 6541, NGC 6624, and NGC 6752 [PDF]
, 2011 Globular clusters (GCs) are emerging as a new class of gamma-ray emitters, thanks to the data obtained from the Fermi Gamma-ray Space Telescope. By now, eight GCs are known to emit gamma-rays at energies >100~MeV.
Cheng, K. S. +5 more
core +2 more sources
Particles, Strings and Cosmology (PASCOS 99), 2000 Ultra-high-energy, >10^19 eV, cosmic-ray and high energy, ~10^14 eV, neutrino production in GRBs is discussed in the light of recent GRB and cosmic-ray observations. Emphasis is put on model predictions that can be tested with operating and planned cosmic-ray and neutrino detectors, and on the prospects of testing for neutrino properties.
openaire +2 more sources
New applications and developments in the neutron shielding
EPJ Web of Conferences, 2017 Shielding neutrons involve three steps that are slowing neutrons, absorption of neutrons, and impregnation of gamma rays. Neutrons slow down with thermal energy by hydrogen, water, paraffin, plastic. Hydrogenated materials are also very effective for the
Uğur Fatma Aysun
doaj +1 more source
Multi-frequency, Multi-Epoch Study of Mrk 501: Hints for a two-component nature of the emission [PDF]
, 2015 Since the detection of very high energy (VHE) $\gamma$-rays from Mrk 501, its broad band emission of radiation was mostly and quite effectively modeled using one zone emission scenario.
Acharya, B. S. +10 more
core +2 more sources
Radiation effect on germination and seedling traits in rice (Oryza sativa L.)
Electronic Journal of Plant Breeding, 2019 The biological effect of new source of physical mutagen viz., electron beam over gamma rays were studied with different dosages in the M1 generation of rice during 2017-18.
R. Lalitha +6 more
doaj +1 more source
Probit analysis and effect of electron beam and gamma rays in blackgram (Vigna mungo (L.) Hepper)
Electronic Journal of Plant Breeding, 2017 An experimental investigation was carried out to determine the lethal dose (LD50) of electron beam and gamma rays on two black gram varieties viz., MDU 1, VBN (Bg) 4. The lethal dose was determined by probit analysis. Dry seeds of both the varieties were
K. Veni +2 more
doaj +1 more source
, 2011 Active galactic nuclei (AGN) can produce both gamma rays and cosmic rays. The observed high-energy gamma-ray signals from distant blazars may be dominated by secondary gamma rays produced along the line of sight by the interactions of cosmic-ray protons ...
Beacom, John F. +3 more
core +1 more source
Cosmic-Ray Events as Background in Imaging Atmospheric Cherenkov Telescopes
, 2007 The dominant background for observations of gamma-rays in the energy region above 50 GeV with Imaging Atmospheric Cherenkov telescopes are cosmic-ray events.
Aharonian +14 more
core +1 more source
Multiwavelength Variability Analysis of 3C 279
Frontiers in Astronomy and Space Sciences, 2017 We present a multifrequency analysis of the variability in the flat-spectrum radio quasar 3C 279 from 2008 to 2014. Our multiwavelength datasets range from 1 mm to gamma-rays, with additional optical polarimetry.
Víctor M. Patiño-Álvarez +8 more
doaj +1 more source
SGARFACE: A Novel Detector For Microsecond Gamma Ray Bursts [PDF]
, 2005 The Short GAmma Ray Front Air Cherenkov Experiment (SGARFACE) is operated at the Whipple Observatory utilizing the Whipple 10m gamma-ray telescope.
Aharonian +23 more
core +1 more source